radeon_dpm
extern int radeon_dpm;
struct radeon_dpm dpm;
int radeon_dpm = -1;
module_param_named(dpm, radeon_dpm, int, 0444);
if (radeon_dpm == 1) {
if (radeon_dpm == 1)
else if (radeon_dpm == 1)
else if (disable_dpm && (radeon_dpm == -1))
else if (radeon_dpm == 0)